Which of the following statements about continental glacial movement is correct?
A. continental glaciers can only flow uphill
b. continental glaciers can flow in all directions
c. continental glaciers can only flow downhill
d. continental glaciers do not flow at all. ***
A farmer uses weeds and stalks from his previous year's crop to plow his field. Which of the following soil conservation techniques is he employing?
a. terracing
b. recycling
c. conservation lplowing ***
d. crop rotation
I answered this
I never heard of a glacier flowing uphill :) They certainly do flow downhill to the ocean.
The correct answer to the first question is b. continental glaciers can flow in all directions.
The correct answer to the second question is c. conservation plowing.
To determine the correct answer for the first question about continental glacial movement, we can analyze each statement:
A. Continental glaciers can only flow uphill. This statement is incorrect as continental glaciers can flow in multiple directions, not just uphill.
B. Continental glaciers can flow in all directions. This statement is a possibility, but we still need to evaluate the remaining options before making a final conclusion.
C. Continental glaciers can only flow downhill. This statement is also incorrect. While gravity generally causes glaciers to flow downhill, they can also move in other directions depending on the topography and additional factors such as the location of the ice accumulation zone.
D. Continental glaciers do not flow at all. This statement is incorrect as glaciers, including continental glaciers, do exhibit movement over time due to the accumulation of snow and ice.
Based on the evaluation of the statements, the correct answer to the first question would be B. Continental glaciers can flow in all directions.
For the second question about the soil conservation technique employed by the farmer, we can similarly analyze each option:
A. Terracing is a technique involving creating multiple flat layers on sloped land to prevent erosion. It does not involve using weeds and stalks for plowing, so this option can be eliminated.
B. Recycling, in the context of soil conservation, usually refers to the reuse of organic material or nutrients. While recycling can be beneficial for soil health, it does not specifically involve using previous year's crop residue for plowing, so this option can also be ruled out.
C. Conservation plowing is a technique where the farmer leaves the crop residue from the previous year's harvest on the field. This residue acts as a natural mulch, helping to reduce soil erosion, retain moisture, and improve soil health. This option aligns with the explanation in the question, indicating that the farmer is indeed employing conservation plowing to conserve soil.
D. Crop rotation is a practice where different crops are grown sequentially on the same field to minimize pests, diseases, and nutrient depletion. While crop rotation is a valuable soil conservation technique, it does not specifically involve using weeds and stalks for plowing, so this option is not the correct answer.
Based on the analysis, the correct answer for the second question is C. Conservation plowing.